What are they doing?
They are cooking./They're cooking.
What is she doing?
She's shopping./She is shopping.
What is he doing?
He's studying./He is studying.
What is she doing?
She's dancing./She is dancing.
What is he doing?
He's drawing./He is drawing.
What are they doing?
They are flying. They're flying.
What are they doing?
They're playing./They are playing.
What are you doing?
I'm sleeping./I am sleeping.
What is he doing?
He's walking./He is walking.
